| 摘要 |
The present invention provides a cyclic derivative compound having a chemical structure represented by general formula (I) or pharmacologically acceptable salts thereof which exhibit a superior whitening effect, wherein with respect to general formula (I), A is derived from an aromatic cyclic compound, Cn, Cn+1, and Cn+2 are three adjacent carbons present in the cyclic compound and n is a positive integer, R1 and R2 are a saturated or unsaturated, straight or branched chain alkyl group or acyl group; and each of R3, R4, R5, and R6 is at least one substituent selected from hydrogen, alkyl, alkoxy, acyloxy, acyloxymethyl, oxo, hydroxy, vinyl, nitrile, carboxaldehyde, carbonitrile, and aldehyde. |
